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  2. Galileo's Leaning Tower of Pisa experiment - Wikipedia

    en.wikipedia.org/wiki/Galileo's_Leaning_Tower_of...

    Galileo's thought experiment concerned the outcome (c) of attaching a small stone (a) to a larger one (b) Galileo set out his ideas about falling bodies, and about projectiles in general, in his book Two New Sciences (1638). The two sciences were the science of motion, which became the foundation-stone of physics, and the science of materials ...

  3. Cavendish experiment - Wikipedia

    en.wikipedia.org/wiki/Cavendish_experiment

    For the first 3 experiments the period was about 15 minutes and for the next 14 experiments the period was half of that, about 7.5 minutes. The period changed because after the third experiment Cavendish put in a stiffer wire. The torsion coefficient could be calculated from this and the mass and dimensions of the balance.

  4. Equations for a falling body - Wikipedia

    en.wikipedia.org/wiki/Equations_for_a_falling_body

    A set of equations describing the trajectories of objects subject to a constant gravitational force under normal Earth-bound conditions.Assuming constant acceleration g due to Earth's gravity, Newton's law of universal gravitation simplifies to F = mg, where F is the force exerted on a mass m by the Earth's gravitational field of strength g.

  5. Drop tube - Wikipedia

    en.wikipedia.org/wiki/Drop_tube

    The NASA Glenn Research Center has a 5 second drop tower (The Zero Gravity Facility) and a 2.2 second drop tower (The 2.2 Second Drop Tower). Much of the operating cost of a drop tower is due to the need for evacuation of the drop tube, to eliminate the effect of aerodynamic drag. Alternatively the experiment is placed inside an outer box (the ...

  6. Gravitational acceleration - Wikipedia

    en.wikipedia.org/wiki/Gravitational_acceleration

    At a fixed point on the surface, the magnitude of Earth's gravity results from combined effect of gravitation and the centrifugal force from Earth's rotation. [ 2 ] [ 3 ] At different points on Earth's surface, the free fall acceleration ranges from 9.764 to 9.834 m/s 2 (32.03 to 32.26 ft/s 2 ), [ 4 ] depending on altitude , latitude , and ...

  7. Delft tower experiment - Wikipedia

    en.wikipedia.org/wiki/Delft_tower_experiment

    Nieuwe Kerk in Delft. In 1586, scientists Simon Stevin and Jan Cornets de Groot conducted an early scientific experiment on the effects of gravity. The experiment, which established that objects of identical size and different mass fall at the same speed, was conducted by dropping lead balls from the Nieuwe Kerk in the Dutch city of Delft.

  8. Shell theorem - Wikipedia

    en.wikipedia.org/wiki/Shell_theorem

    A spherically symmetric body affects external objects gravitationally as though all of its mass were concentrated at a point at its center. If the body is a spherically symmetric shell (i.e., a hollow ball), no net gravitational force is exerted by the shell on any object inside, regardless of the object's location within the shell.

  9. Dropping In Microgravity Environment - Wikipedia

    en.wikipedia.org/wiki/Dropping_In_Microgravity...

    The hypothesis must be testable in 2.2 seconds, and gravity must be the experimental variable of the experiment. The utility of the proposed experiment in space exploration is an important criterion. The experimental apparatus may not be larger than a cube with sides that are 12 in (300 mm) long. For safety reasons, the following are not allowed:

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